Rear diffusor of an automobile



FIG. 1 is a top perspective view of a rear diffusor of an automobile,showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a top view thereof.

In the drawings, the broken lines show portions of a rear diffuser of anautomobile and form no part of the claimed design.

The ornamental design for a rear diffusor of an automobile, as shown anddescribed.